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Results for the year to 31 March 2015

Good flow of Private Equity realisations with proceeds of £831m; continued selective investment of £369m in four transactions and strong earnings growth in the portfolio underpinned a £719m investment return

Gross investment return of 20% in Infrastructure, which benefited from a 25% total shareholder return from 3i Infrastructure plc, its strongest performance since IPO

Debt Management raised £2.4bn AUM during the year, closing 6 CLOs and diversifying its offering through the €250m first close of the European Middle Market Loan Fund

Continued material improvement in cash income and ongoing operational efficiency led to operating cash profitof £28m

Robust balance sheet with gross debt and interest costs reduced to £815m and £49m respectively. Net cash of £49m and nil gearing at 31 March 2015

Proposed final dividend of 14.0 pence per share, bringing the total dividend for FY2015 to 20.0 pence per share, subject to shareholder approval

Simon Borrows, 3i’s Chief Executive, commented:

“This has been a strong year for 3i with all three of our businesses performing well. We have reshaped our business model and our shareholders are benefiting from attractive returns and dividends. We look forward with confidence.”

For further information regarding the announcement of 3i’s annual results to 31 March 2015, including a live videocast of the results presentation at 10.00am, please visitwww.3i.com.

Notes to editors

3i is a leading international investment manager focused on mid-market Private Equity, Infrastructure and Debt Management. Our core investment markets are northern Europe and North America. For further information, please visit:www.3i.com.

Notes to the announcement of the results

Note 1

All of the financial data in this announcement is taken from the Investment basis financial statements. The statutory accounts are prepared under IFRS for the year to 31 March 2015 and have not yet been delivered to the Registrar of Companies. The statutory accounts for the year to 31 March 2014 have been delivered to the Registrar of Companies. The auditors’ reports on the statutory accounts for these years are unqualified and do not contain any matters to which the auditor drew attention by way of emphasis or any statements under section 498(2) or (3) of the Companies Act 2006. This announcement does not constitute statutory accounts.

Note 2

Copies of the Annual report and accounts 2015 will be distributed to shareholders on or soon after 26 May 2015.

Note 3

This announcement has been prepared solely to provide information to shareholders. It should not be relied on by any other party for any other purpose.

This announcement may contain statements about the future including certain statements about the future outlook for 3i Group plc and its subsidiaries (“3i”). These are not guarantees of future performance and will not be updated. Although we believe our expectations are based on reasonable assumptions, any statements about the future outlook may be influenced by factors that could cause actual outcomes and results to be materially different.

Note 4

Subject to shareholder approval, the proposed final dividend is expected to be paid on 24 July 2015 to holders of ordinary shares on the register on 19 June 2015.